Liquid crystal display device having common electrodes formed over the main face of an insulating substrate and made of a coating type electroconductive film inside a bank to regulate the edges thereof

In a liquid crystal display panel of a type having common electrodes, one solidly formed for each pixel, over the main face of an insulating substrate and a comb-shaped pixel electrode over the common electrodes via an insulating film, the patterning of the common electrodes is accurately accomplished without using sputtered film formation or a photolithographic step. A bank 50 for common electrodes is formed simultaneously with a gate wiring/electrode 3 and common electrode wiring 10 to be formed over the main face of an insulating substrate 1 and, by applying electroconductive ink to the inside surrounded by this bank 50, the common electrodes 2 are formed without using photolithography.